import {login} from '@/api/user';
import {getToken, setToken, removeToken} from '@/utils/auth';
import router, {resetRouter} from '@/router';
import {genKey, encrypt} from '@/utils/aes-util';

const state = {
    token: getToken(),
    name: '',
    avatar: '',
    introduction: '',
    roles: []
}

const mutations = {
    SET_TOKEN: (state, token) => {
        state.token = token
    },
    SET_INTRODUCTION: (state, introduction) => {
        state.introduction = introduction
    },
    SET_NAME: (state, name) => {
        state.name = name
    },
    SET_AVATAR: (state, avatar) => {
        state.avatar = avatar
    },
    SET_ROLES: (state, roles) => {
        state.roles = roles
    }
}

const actions = {
    // user login
    login({commit}, userInfo) {
        const {username, password} = userInfo
        return new Promise((resolve, reject) => {
            let key = genKey();
            let encodePassword = encrypt(password, key);
            login({username: username.trim(), password: encodePassword, tag: key, rememberMe: 1}).then(response => {
                const {data} = response;
                const {roles} = response;
                commit('SET_TOKEN', data);
                localStorage.setItem('roles', JSON.stringify(roles));
                localStorage.setItem('USER_ROLE', roles[0]);
                setToken(data);
                resolve()
            }).catch(error => {
                reject(error);
            })
        })
    },

    // get user info
    getInfo({commit, state}) {
        return new Promise((resolve, reject) => {
            const data = {}
            data.roles = JSON.parse(localStorage.getItem('roles'))
            commit('SET_ROLES', data.roles)
            resolve(data)
        })
    },

    // user logout
    logout({commit, state}) {
        // return new Promise((resolve, reject) => {
        //   logout(state.token).then(() => {
        //     commit('SET_TOKEN', '')
        //     commit('SET_ROLES', [])
        //     removeToken()
        //     resetRouter()
        //     resolve()
        //   }).catch(error => {
        //     reject(error)
        //   })
        // })
        return new Promise(resolve => {
            commit('SET_TOKEN', '')
            commit('SET_ROLES', [])
            removeToken()
            resetRouter()
            resolve()
        })
    },

    // remove token
    resetToken({commit}) {
        return new Promise(resolve => {
            commit('SET_TOKEN', '')
            commit('SET_ROLES', [])
            removeToken()
            resolve()
        })
    },

    // dynamically modify permissions
    changeRoles({commit, dispatch}, role) {
        return new Promise(async resolve => {
            const token = role + '-token'

            commit('SET_TOKEN', token)
            setToken(token)

            const {roles} = await dispatch('getInfo')

            resetRouter()

            // generate accessible routes map based on roles
            const accessRoutes = await dispatch('permission/generateRoutes', roles, {root: true})

            // dynamically add accessible routes
            router.addRoutes(accessRoutes)

            // reset visited views and cached views
            dispatch('tagsView/delAllViews', null, {root: true})

            resolve()
        })
    }
}

export default {
    namespaced: true,
    state,
    mutations,
    actions
}
